Installation
3-4 SIMATIC TIWAY I Series 500 NIM User Manual
3.3 Inserting the Module into the Base
Before using the module, you should decide whether you want to protect it
by “keying” the module’s position in the I/O base. As shown in Figure 3-1,
keying is accomplished by placing the three keys provided in the right-hand
slot of the two slots occupied by the module so that they fit into the notches
on the module edge card. This prevents another I/O module from being
mistakenly inserted into the slots reserved for a communication module.
!WARNING
Do not insert or remove the NIM (or keys) while power is applied to the base,
since doing this may cause personal injury, alter controller memory, cause a
controller fatal error, or damage the module.
Until you disconnect power to the I/O base, hazardous voltages are present. Inserting or
removing the NIM before disconnecting power to the base could cause death or serious
injury to personnel, and/or damage to equipment; it could also alter CPU memory, cause a
CPU fatal error, or damage the NIM.
Do not insert or remove the NIM while power is applied to the base.
Figure 3-1 Keying the Series 500 NIM